Yes it can be due to several things.
Right now I am listening to a KlassD amplifier with ICEpower output stage. 2x500w. Of course, it may have affected the sound in the wrong direction.
Do not know if it has high or low output impedance.
When I used my tube amplifier, I did not experience the same disturbance in the 7khz-12khz range.
Certainly affects the amplifier.
KlassD has more controlled bass and is completely balanced from the CD player to the speakers but not as good treble.
Last edited:
OK, so assuming it's the largest of the Nostromo boxes, which from your description is what appears to be the case, then low output impedance class D amplifiers are exactly the type of amplifier I said in the plans that cabinet is not designed for, which partly explains why you are having some issues, aside from departing from the damping, construction materials &c. Note on the front page where it says:
With a class D amplifier it's hovering between maximally flat (rarely a good alignment) and a very shallow EBS. While the amplifier will have plenty of electrical damping, the acoustic alignment is unlikely to suit many spaces unless pulled well out from room boundaries, and having a moderately sharp tuning the effect may be audible. Note this is not the designed alignment, just the result. With a SET or equivalent of about 2.5ohms output impedance (placing in a crucible for averaging purposes), the alignment is as designed, with a slight ~ 1/2dB rise through the upper & midbass, a relatively well-damped rolloff & broader box output through the effectively elevated Q. That was the target alignment and voicing for the design. If you require something different, you need a different design.
and
With a class D amplifier it's hovering between maximally flat (rarely a good alignment) and a very shallow EBS. While the amplifier will have plenty of electrical damping, the acoustic alignment is unlikely to suit many spaces unless pulled well out from room boundaries, and having a moderately sharp tuning the effect may be audible. Note this is not the designed alignment, just the result. With a SET or equivalent of about 2.5ohms output impedance (placing in a crucible for averaging purposes), the alignment is as designed, with a slight ~ 1/2dB rise through the upper & midbass, a relatively well-damped rolloff & broader box output through the effectively elevated Q. That was the target alignment and voicing for the design. If you require something different, you need a different design.
Well that is why it didn't match KlassD.
But I built them to the tubeamp and they were awesome. No problems.
Thank for explaining.
Now I have been listening to my modified Nostromo speakers for a 20 hours. It is the length 10cm (4 inches) on the bass reflex tube and 40 ° edges that make these something special to listen to. Love that they place the different instruments and voices in an exact place in the soundscape.
It is a pure pleasure to listen. 16 liter big box is the right one for me.
The bass goes deep and is dry and detailed.
When I increase the volume, the bass gets more power and it is difficult not to stomp the beat. You get caught up in the music. It sounds a lot like high end at a price that must be seen as a robbery. Thanks.
It is a pure pleasure to listen. 16 liter big box is the right one for me.
The bass goes deep and is dry and detailed.
When I increase the volume, the bass gets more power and it is difficult not to stomp the beat. You get caught up in the music. It sounds a lot like high end at a price that must be seen as a robbery. Thanks.
Last edited by a moderator:
